90 lines
1.8 KiB
Plaintext
90 lines
1.8 KiB
Plaintext
<?php
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/**
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* Query
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*
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* Free Query Builder / Database Abstraction Layer
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*
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* @package Query
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* @author Timothy J. Warren
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* @copyright Copyright (c) 2012 - 2014
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* @link https://github.com/aviat4ion/Query
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* @license http://philsturgeon.co.uk/code/dbad-license
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*/
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// --------------------------------------------------------------------------
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namespace Query\Drivers\Pgsql;
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/**
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* PostgreSQL specifc class
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*
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* @package Query
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* @subpackage Drivers
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*/
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class Driver extends \Query\Abstract_Driver {
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/**
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* Connect to a PosgreSQL database
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*
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* @param string $dsn
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* @param string $username
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* @param string $password
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* @param array $options
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*/
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public function __construct($dsn, $username=null, $password=null, array $options=array())
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{
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if (strpos($dsn, 'pgsql') === FALSE) $dsn = 'pgsql:'.$dsn;
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parent::__construct($dsn, $username, $password, $options);
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}
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// --------------------------------------------------------------------------
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/**
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* Get a list of schemas for the current connection
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*
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* @return array
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*/
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public function get_schemas()
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{
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$sql = <<<SQL
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SELECT DISTINCT "schemaname" FROM "pg_tables"
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WHERE "schemaname" NOT LIKE 'pg\_%'
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AND "schemaname" != 'information_schema'
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SQL;
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return $this->driver_query($sql);
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}
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// --------------------------------------------------------------------------
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/**
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* Retrieve foreign keys for the table
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*
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* @param string $table
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* @return array
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*/
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public function get_fks($table)
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{
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$value_map = array(
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'c' => 'CASCADE',
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'r' => 'RESTRICT',
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);
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$keys = parent::get_fks($table);
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foreach($keys as &$key)
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{
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foreach(array('update', 'delete') AS $type)
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{
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if ( ! isset($value_map[$key[$type]])) continue;
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$key[$type] = $value_map[$key[$type]];
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}
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}
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return $keys;
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}
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}
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//End of pgsql_driver.php
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